文档介绍：重型自卸汽车设计(变速器设计)
摘要
重型自卸汽车因其运载量比较大,驱动力比较大、发动机功率、扭矩大,工作环境恶劣,在工程运输中运用比较广泛。
对于变速器的设计:我在设计中要首先确定变速器的布置形式,然后选择传动比的范围,确定各挡的传动比。之后确定中心距、外形尺寸。齿轮参数的选择:模数、压力角、螺旋角、尺宽。各挡齿轮的齿数确定。
变速器的各种布置中要分析各种变速器的布置对汽车整体以及各个部件的影响,选择合适的布置形式给变速器与更优化的布置。让变速器在汽车整体中的作用能够达到最佳的状态。
最后,就是变速器的操作机构布置与设计,主要考虑结构简单、操作轻便、档位清晰、操作杆的位置合理、换档准确、迅速、安全可靠。本设计选用机械式远距离操作,在换档与挂挡机构中,设置了互锁自锁装置;为防止误挂倒档,还设置了倒档锁。
设计中变速器的齿轮采用渐开线齿轮形式。变速器的轴应满足刚度、强度、耐磨性要求。
最后,还得进行变速器实验,进行室内台架试验。考核齿轮的可靠性与疲劳寿命;同步器和换档机构的工作性能与耐久性;测定传动的效率、噪声即刚度等。
关键词:操作机构,同步器,轴承,模数,传动比
HEAVY DUMPER TRANSMISSION DESSIGN
(ASSEMPLY DESIGN)
ABSTRACT
Heavy type from unload an automobile because it carries quantity more and greatly,driving the parision big ,launch the power of the machine and big torque big work environment of usage is more and extensively in the engineering the conveyance.
For the design of the transmission:I want the decoration form of the certain transmission during the period of design first ,then choose to spread scope of move make sure the center be part from,shape choice of the gear parameter:The mode number,pressue Cape,spiral Cape,Chinese foot gear that block gear counts to really settle.
Various decoration that want to analyze various tranmission in the decoration of the transmisssion is whole to automobile and the influence of each parts,choose a suitable decoration from to the transmission with more excellent turn of the transmission in the automobile of the whole of function can attian the best appearance.
Finally,the anization of the derailleur assign and designs,Consider structure simple,handle light,self location clarity, gearshift lever position rational to transser to shelf,accurate,fast,safe,and reliable to transfer to shelf person who selects machinery for use handle remotely ,in shelf of transferring to hang shelf of anization originally,Locked the device and lock device each other after setting up;In order to prevent hanging and pouring the shelf by mi